金属学报  1987, Vol. 23 Issue (6): 521-526

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WC-Co合金微裂纹形核过程的探讨

宋士泓;李健纯

中南工业大学;中南工业大学

INITIATION OF MICROCRACKS IN WC-Co ALLOYS

by SONG Shihong; LI Jianchun (Central-South University of Technology) (Manuscript received 10 December 1985; revised manuscript 14 June; 1986)

宋士泓;李健纯. WC-Co合金微裂纹形核过程的探讨[J]. 金属学报, 1987, 23(6): 521-526.
, . INITIATION OF MICROCRACKS IN WC-Co ALLOYS[J]. Acta Metall Sin, 1987, 23(6): 521-526.

摘要 参考文献 相关文章 Metrics 全文: PDF(2048 KB)   摘要: 本文通过对疲劳变形试样的扫描和透射电镜观察,探讨了WC-Co系硬质合金中微裂纹形核过程及其与微结构的关系,说明了WC晶粒中运动位错与亚晶界及WC/WC晶界的交割,以及位错在两种内界面附近的堆积是微裂纹形核的起因。减小WC的亚结构尺寸有利于提高合金的使用性能。 Abstract：The initiation of microcracks and its connection with microstructure of WC-Co hardmetals have been studied by STEM. The microcracks in specimens are induced by high-frequency compressive fatigue. The causes of microcrack initiation are explained by traverse of slipping dislocations across sub-grain and WC/WC grain boundaries and the pile-up of dislocations near the boundaries. The reduction of substructure dimension is required to improve the alloy quality. 收稿日期: 1987-06-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 宋士泓 李健纯 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I6/521 1 Suzuki H, Hayashi K. Trans Jpn Inst Met, 1975; 16: 353 2 Suzuki H, Tanase T. Planseeber Pulvermetall, 1976; 242: 71 3 Roebuck B, Almond E A. Recent Advances in Hardmetal Production(Proc. Conf.), Loughborough University of rech. and Metall Powder Report, Vol. 2, 1979: 28 4 Chermant J L, Osterstock F. J Mater Sci, 1976; 11: 1939 5 Engel U, Huebner H. J Mater Sci. 1978; 13: 2003 6 Johannesson T, Lehtinen B, Philos Mag, 1971; 24: 1079 7 Hagege S, Nouet G, Delavignette P. Phys Status Solidi(a), 1980; 61: 675 8 Chermant J L, Deschanvres A, Osterstock F. Powder Metall, 1977; 2: 63 9 Gurland J. Jernkontorets Ann, 1963; 4: 147 10 宋士泓,刘武,李健纯.理化检验,物理分册,1987;23(1) :28 11 Jayaram V, Sinclair R, Rowcliffe D J. Acta Metall, 1983; 31: 373 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed